Fecha/hora: 09/06/2024 16:20:25

Biblioteca(s): | INIA Tacuarembó.
Fecha corriente: | 11/06/2015
Fecha de la última actualización: | 13/09/2018
Autoria: | GOMEZ, D.; ROJAS-BUFFET, C.; VIERA, C.
Afiliación: | DEMIAN FERNANDO GOMEZ DAMIANO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINA ROJAS-BUFFET; CARMEN VIERA.
Título: | The influence of regurgitation by sisters on male growth in the subsocial spider Anelosimus vierae (Araneae, Theridiidae).
Año de publicación: | 2015
Fuente/Imprenta: | Arachnology, 2015, v. 16, no. 7, p. 252-254.
Idioma: | Inglés

Contenido:

Food exchange by the mother to her brood is a frequent phenomenon in social arthropods. In the subsocial spiders of the genus Anelosimus Simon, 1891, maternal regurgitation to offspring plays an important role in the survival of the colony. Regurgitations also occur between subadult males and females in Anelosimus vierae Agnarsson, 2012. In order to examine the effects of supplementary food on the subadult male?s development towards maturity, we carried out two types of trial:
groups of subadult males and female siblings and non-siblings were weighed, and cephalothorax and leg I in adult males were measured. Our results suggest that the supplementary food obtained by males from sisters allows the acquisition of larger size. Besides weight gain, males fed by females reached larger sizes of leg I femur and tibia. Leg I could be important in intrasexual competition, given that males with larger legs are more likely to win agonistic encounters. This also has positive implications for access to females.

Palabras-Clave: | ANELOSIMUS VIERAE.
Thesagro: | ARANEAE; ENTOMOLOGIA; URUGUAY.
Categoría del tema: | --
Registro original: | INIA Tacuarembó (TBO)
Ejemplares: | TBO - (100707-1) - PXI - AP - PP - PP/ARACHNOLOGY/2015/7 -  -  - DIS